diff --git a/src/config.h b/src/config.h
index 4c9a3f6..147c016 100644
--- a/src/config.h
+++ b/src/config.h
@@ -20,7 +20,7 @@
 #define PISERVER_POSTINSTALLSCRIPT PISERVER_DATADIR "/scripts/postinstall.sh"
 #define PISERVER_CONVERTSCRIPT PISERVER_DATADIR "/scripts/convert_folder.sh"
 
-#define OUI_FILTER         "^(b8:27:eb|dc:a6:32|e4:5f:01|d8:3a:dd):"
+#define OUI_FILTER         "^(b8:27:eb|dc:a6:32|e4:5f:01|d8:3a:dd|28:cd:c1|2c:cf:67|3a:35:41):"
 #define DHCPANALYZER_FILTER_STRING "PXEClient"
 
 #define PISERVER_LDAP_URL  "ldapi:///"